Advice wanted: zwave_error: Z-Wave error 202

I have increased the amount of ZWave devices in my network in the last couple of months. My whole network exists of Fibaro wall plugs, Fibaro dimmers and Switches. The temperature sensors are all Aeotec aërQ Temperature & Humidity Sensors. My controller is a Zooz ZST39 LR. I have total of 64 devices added to my controller.

Now that I have a lot more devices and 1 controller, I noticed that I seem to get more errors. I never had these errors before when the network had between 20 and 30 devices.

They errors look mainly like this:
Error while executing automation automation.bedroom_power_plug_television_turn_off_in_absence: Unable to set value 35-37-0-targetValue: zwave_error: Z-Wave error 202 - Failed to send the command after 1 attempts (ZW0202)

This happens now once or twice a day. For the record, the error occurred when an automation had to turn of a Fibaro Wall plug.
The power plug does respond to my command when I manually turn it on and off in HA. So it is available. No devices are offline. The error happens with other plugs sometimes too.

I have tried rebuilding the routes of my network. But after having done that, I noticed that I have a lot more red lines then I did before.

Would a range extender help to prevent these errors? I was looking at the Aeotec Range Extender 7

Done a lot of re-interviewing devices today. And now most devices have green lines for the routes. But the problem still remains. Had the same kind of error again for turning off a light switch this evening. It’s almost never the same device. It seems to be random.

I could be mistaken but I don’t believe the color of the lines on the Z-wave-JS UI network map has anything to do with the quality of the connection. At least according to the Map Legend shown under options.

Hmm ok.

I am starting to think the error is a software issue. I see more people with different controllers, etc having the same issue with ZWaveJS after some recent updates.

Wondering if I can downgrade to an earlier version.

Again problems. Was running just fine until it had to turn on a light switch:

2025-01-18T08:24:08.386Z CNTRLR   The controller is unresponsive
2025-01-18 09:24:08.388 INFO Z-WAVE: Controller status: Controller is unresponsive
2025-01-18T08:24:08.389Z DRIVER   Controller missed Send Data callback. Attempting to recover...
2025-01-18T08:24:08.390Z CNTRLR   Performing soft reset...
2025-01-18T08:24:08.404Z CNTRLR   Waiting for the controller to reconnect...
2025-01-18T08:24:08.585Z CNTRLR   reconnected and restarted
2025-01-18T08:24:08.586Z CNTRLR   Starting hardware watchdog...
2025-01-18T08:24:08.587Z CNTRLR   Switching serial API to 16-bit node IDs...
2025-01-18T08:24:08.589Z CNTRLR   The controller is no longer unresponsive
2025-01-18 09:24:08.590 INFO Z-WAVE: Controller status: Controller is Ready
2025-01-18T08:24:08.859Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:09.032Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:09.136Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:09.211Z DRIVER   Dropping message with invalid payload
2025-01-18 09:24:11.769 INFO APP: GET /health/zwave 301 0.859 ms - 162
2025-01-18T08:24:14.061Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:15.060Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:21.060Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:29.477Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:30.481Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:30.541Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:31.059Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:31.612Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:32.612Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:35.668Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:35.887Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:36.667Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:36.958Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:37.702Z DRIVER   Dropping message with invalid payload
2025-01-18T08:24:38.621Z CNTRLR   Switching to 16-bit node IDs successful
2025-01-18 09:24:38.695 INFO Z-WAVE: [Node 024] Value updated: 37-1-targetValue false => true
2025-01-18 09:24:38.697 INFO Z-WAVE: [Node 024] Value updated: 37-1-currentValue false => true
2025-01-18 09:24:38.800 INFO Z-WAVE: [Node 024] Value updated: 37-1-currentValue true => true

No idea why the controller is unresponsive suddenly. It’s driving me nuts.